来源

享学堂

主函数

import java.io.File;
import java.io.FileFilter;
import java.io.FileOutputStream;
import java.io.FilenameFilter;public class MyMain {public static void main(String[] args) throws Exception {byte[] mainDexData; //存储源apk中的源dex文件 byte[] aarData;     // 存储壳中的壳dex文件byte[] mergeDex;    // 存储壳dex 和源dex 的合并的新dex文件File tempFileApk = new File("source/apk/temp");if (tempFileApk.exists()) {File[]files = tempFileApk.listFiles();for(File file: files){if (file.isFile()) {file.delete();}}}File tempFileAar = new File("source/aar/temp");if (tempFileAar.exists()) {File[]files = tempFileAar.listFiles();for(File file: files){if (file.isFile()) {file.delete();}}}/*** 第一步 处理原始apk 加密dex**/AES.init(AES.DEFAULT_PWD);//解压apkFile apkFile = new File("source/apk/app-debug.apk");File newApkFile = new File(apkFile.getParent() + File.separator + "temp");if(!newApkFile.exists()) {newApkFile.mkdirs();}File mainDexFile = AES.encryptAPKFile(apkFile,newApkFile);if (newApkFile.isDirectory()) {File[] listFiles = newApkFile.listFiles();for (File file : listFiles) {if (file.isFile()) {if (file.getName().endsWith(".dex")) {String name = file.getName();System.out.println("rename step1:"+name);int cursor = name.indexOf(".dex");String newName = file.getParent()+ File.separator + name.substring(0, cursor) + "_" + ".dex";System.out.println("rename step2:"+newName);file.renameTo(new File(newName));}}}}/*** 第二步 处理aar 获得壳dex*/File aarFile = new File("source/aar/mylibrary-debug.aar");File aarDex  = Dx.jar2Dex(aarFile);
//        aarData = Utils.getBytes(aarDex);   //将dex文件读到byte 数组File tempMainDex = new File(newApkFile.getPath() + File.separator + "classes.dex");if (!tempMainDex.exists()) {tempMainDex.createNewFile();}
//        System.out.println("MyMain" + tempMainDex.getAbsolutePath());FileOutputStream fos = new FileOutputStream(tempMainDex);byte[] fbytes = Utils.getBytes(aarDex);fos.write(fbytes);fos.flush();fos.close();/*** 第3步 打包签名*/File unsignedApk = new File("result/apk-unsigned.apk");unsignedApk.getParentFile().mkdirs();
//        File disFile = new File(apkFile.getAbsolutePath() + File.separator+ "temp");Zip.zip(newApkFile, unsignedApk);//不用插件就不能自动使用原apk的签名...File signedApk = new File("result/apk-signed.apk");Signature.signature(unsignedApk, signedApk);}private static File getMainDexFile(File apkFile) {// TODO Auto-generated method stubFile disFile = new File(apkFile.getAbsolutePath() + "unzip");Zip.unZip(apkFile, disFile);File[] files = disFile.listFiles(new FilenameFilter() {@Overridepublic boolean accept(File dir, String name) {if (name.endsWith(".dex")) {return true;}return false;}});for (File file: files) {if (file.getName().endsWith("classes.dex")) {return file;}}return null;}
}

AES.java

import java.io.File;
import java.io.FileOutputStream;
import java.io.FilenameFilter;
import java.security.InvalidKeyException;
import java.security.NoSuchAlgorithmException;import javax.crypto.BadPaddingException;
import javax.crypto.Cipher;
import javax.crypto.IllegalBlockSizeException;
import javax.crypto.NoSuchPaddingException;
import javax.crypto.spec.SecretKeySpec;/*** Created by xiang on 16/6/8.*/
public class AES {public static final String DEFAULT_PWD = "abcdefghijklmnop";private static final String algorithmStr = "AES/ECB/PKCS5Padding";private static Cipher encryptCipher;private static Cipher decryptCipher;public static void init(String password) {try {// 生成一个实现指定转换的 Cipher 对象。encryptCipher = Cipher.getInstance(algorithmStr);decryptCipher = Cipher.getInstance(algorithmStr);// algorithmStrbyte[] keyStr = password.getBytes();SecretKeySpec key = new SecretKeySpec(keyStr, "AES");encryptCipher.init(Cipher.ENCRYPT_MODE, key);decryptCipher.init(Cipher.DECRYPT_MODE, key);} catch (NoSuchAlgorithmException e) {e.printStackTrace();} catch (NoSuchPaddingException e) {e.printStackTrace();} catch (InvalidKeyException e) {e.printStackTrace();}}/**** @param srcAPKfile  源文件所在位置* @param dstApkFile  目标文件* @return             加密后的新dex 文件* @throws Exception*/public static File encryptAPKFile(File srcAPKfile, File dstApkFile) throws Exception {if (srcAPKfile == null) {System.out.println("encryptAPKFile :srcAPKfile null");return null;}
//        File disFile = new File(srcAPKfile.getAbsolutePath() + "unzip");
//		Zip.unZip(srcAPKfile, disFile);Zip.unZip(srcAPKfile, dstApkFile);//获得所有的dex （需要处理分包情况）File[] dexFiles = dstApkFile.listFiles(new FilenameFilter() {@Overridepublic boolean accept(File file, String s) {return s.endsWith(".dex");}});File mainDexFile = null;byte[] mainDexData = null;for (File dexFile: dexFiles) {//读数据byte[] buffer = Utils.getBytes(dexFile);//加密byte[] encryptBytes = AES.encrypt(buffer);if (dexFile.getName().endsWith("classes.dex")) {mainDexData = encryptBytes;mainDexFile = dexFile;}//写数据  替换原来的数据FileOutputStream fos = new FileOutputStream(dexFile);fos.write(encryptBytes);fos.flush();fos.close();}return mainDexFile;}public static byte[] encrypt(byte[] content) {try {byte[] result = encryptCipher.doFinal(content);return result;} catch (IllegalBlockSizeException e) {e.printStackTrace();} catch (BadPaddingException e) {e.printStackTrace();}return null;}public static byte[] decrypt(byte[] content) {try {byte[] result = decryptCipher.doFinal(content);return result;} catch (IllegalBlockSizeException e) {e.printStackTrace();} catch (BadPaddingException e) {e.printStackTrace();}return null;}public static void main(String[] args) throws Exception {
//        byte[] newfs = Utils.int2Bytes(2312312);
//        byte[] refs = new byte[4];
//        //楂樹綅鍦ㄥ墠锛屼綆浣嶅湪鍓嶆帀涓釜
//        for (int i = 0; i < 4; i++) {
//            refs[i] = newfs[newfs.length - 1 - i];
//        }
//        System.out.println(Arrays.toString(newfs));
//        System.out.println(Arrays.toString(refs));
//
//        ByteBuf byteBuf = Unpooled.buffer();
//
//        byteBuf.writeInt(2312312);
//        byte[] a = new byte[4];
//        byteBuf.order(ByteOrder.LITTLE_ENDIAN);
//        byteBuf.readBytes(a);
//        System.out.println(Arrays.toString(a));//        AES.init(AES.DEFAULT_PWD);
//        String msg = Base64.encode(AES.encrypt(new byte[]{1, 2, 3, 4, 5}));
//        System.out.println(msg);
//        byte[] aes = AES.decrypt(Base64.decode(msg));
//        System.out.println(Arrays.toString(aes));File zip = new File("/Users/xiang/develop/source.apk");String absolutePath = zip.getAbsolutePath();File dir = new File(absolutePath.substring(0, absolutePath.lastIndexOf(".")));Zip.unZip(zip,dir);File zip2 = new File("/Users/xiang/develop/app-debug2.apk");Zip.zip(dir,zip2);String[] argv = {"jarsigner","-verbose", "-sigalg", "MD5withRSA","-digestalg", "SHA1","-keystore", "/Users/xiang/develop/debug.keystore","-storepass","android","-keypass", "android","-signedjar", "/Users/xiang/develop/app-debug2-sign.apk","/Users/xiang/develop/app-debug2.apk","androiddebugkey"};Process pro = null;try {pro = Runtime.getRuntime().exec(argv);//destroy the streamtry {pro.waitFor();} catch (InterruptedException e) {e.printStackTrace();}} finally {if (pro != null) {pro.destroy();}}}}

Dx.java

import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FilenameFilter;
import java.io.IOException;
import java.io.InputStream;/*** Created by LK on 2017/9/5.* */public class Dx {public static File jar2Dex(File aarFile) throws IOException, InterruptedException {File fakeDex = new File(aarFile.getParent() + File.separator + "temp");System.out.println("jar2Dex: aarFile.getParent(): " + aarFile.getParent());//解压aar到 fakeDex 目录下Zip.unZip(aarFile, fakeDex);//过滤找到对应的fakeDex 下的classes.jarFile[] files = fakeDex.listFiles(new FilenameFilter() {@Overridepublic boolean accept(File file, String s) {return s.equals("classes.jar");}});if (files == null || files.length <= 0) {throw new RuntimeException("the aar is invalidate");}File classes_jar = files[0];// 将classes.jar 变成classes.dexFile aarDex = new File(classes_jar.getParentFile(), "classes.dex");//我们要将jar 转变成为dex 需要使用android tools 里面的dx.bat//使用java 调用windows 下的命令Dx.dxCommand(aarDex, classes_jar);return aarDex;}public static void dxCommand(File aarDex, File classes_jar) throws IOException, InterruptedException {Runtime runtime = Runtime.getRuntime();Process process = runtime.exec("cmd.exe /C dx --dex --output=" + aarDex.getAbsolutePath() + " " +classes_jar.getAbsolutePath());try {process.waitFor();} catch (InterruptedException e) {e.printStackTrace();throw e;}if (process.exitValue() != 0) {InputStream inputStream = process.getErrorStream();int len;byte[] buffer = new byte[2048];ByteArrayOutputStream bos = new ByteArrayOutputStream();while((len=inputStream.read(buffer)) != -1){bos.write(buffer,0,len);}System.out.println(new String(bos.toByteArray(),"GBK"));throw new RuntimeException("dx run failed");}process.destroy();}
}

Signature.java

import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.IOException;
import java.io.InputStream;/*** Created by LK on 2017/9/4.* */public class Signature {public static void signature(File unsignedApk, File signedApk) throws InterruptedException, IOException {String cmd[] = {"cmd.exe", "/C ","jarsigner",  "-sigalg", "MD5withRSA","-digestalg", "SHA1","-keystore", "C:/Users/allen/.android/debug.keystore","-storepass", "android","-keypass", "android","-signedjar", signedApk.getAbsolutePath(),unsignedApk.getAbsolutePath(),"androiddebugkey"};Process process = Runtime.getRuntime().exec(cmd);System.out.println("start sign");
//        BufferedReader reader = new BufferedReader(new InputStreamReader(process.getInputStream()));
//        String line;
//        while ((line = reader.readLine()) != null)
//            System.out.println("tasklist: " + line);try {int waitResult = process.waitFor();System.out.println("waitResult: " + waitResult);} catch (InterruptedException e) {e.printStackTrace();throw e;}System.out.println("process.exitValue() " + process.exitValue() );if (process.exitValue() != 0) {InputStream inputStream = process.getErrorStream();int len;byte[] buffer = new byte[2048];ByteArrayOutputStream bos = new ByteArrayOutputStream();while((len=inputStream.read(buffer)) != -1){bos.write(buffer,0,len);}System.out.println(new String(bos.toByteArray(),"GBK"));throw new RuntimeException("签名执行失败");}System.out.println("finish signed");process.destroy();}
}

Utils.java

import java.io.File;
import java.io.RandomAccessFile;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import java.util.zip.Adler32;/*** Created by xiang on 2017/5/17.*/public class Utils {//  public static byte[] int2Bytes(int number) {
//      byte[] b = new byte[4];
//      for (int i = 3; i >= 0; i--) {
//          b[i] = (byte) (number % 256);
//          number >>= 8;
//      }
//      return b;
//  }public static byte[] int2Bytes(int value) {byte[] src = new byte[4];src[3] = (byte) ((value >> 24) & 0xFF);src[2] = (byte) ((value >> 16) & 0xFF);src[1] = (byte) ((value >> 8) & 0xFF);src[0] = (byte) (value & 0xFF);return src;}public static int bytes2Int(byte[] src) {int value;value = (int) ((src[0] & 0xFF)| ((src[1] & 0xFF)<<8)| ((src[2] & 0xFF)<<16)| ((src[3] & 0xFF)<<24));return value;}public static void changeSignature(byte[] newDex) throws NoSuchAlgorithmException {System.out.println("更换dex文件 签名信息...");MessageDigest md = MessageDigest.getInstance("SHA-1");//从32个字节开始 计算sha1值md.update(newDex, 32, newDex.length - 32);byte[] sha1 = md.digest();//从第12位开始拷贝20字节内容//替换signatureSystem.arraycopy(sha1, 0, newDex, 12, 20);System.out.println("更换dex文件 checksum...");}public static void changeCheckSum(byte[] newDex) {Adler32 adler = new Adler32();adler.update(newDex, 12, newDex.length - 12);int value = (int) adler.getValue();byte[] checkSum = Utils.int2Bytes(value);System.arraycopy(checkSum, 0, newDex, 8, 4);}public static byte[] getBytes(File dexFile) throws Exception {RandomAccessFile fis = new RandomAccessFile(dexFile, "r");byte[] buffer = new byte[(int)fis.length()];fis.readFully(buffer);fis.close();return buffer;}public static void changeFileSize(byte[] mainDexData, byte[] newDex, byte[] aarData ) {byte[] bytes = Utils.int2Bytes(mainDexData.length);System.out.println("拷贝原来dex长度到新的dex:" + Utils.bytes2Int(bytes));//更该文件头长度信息//修改System.out.println("更换dex 文件头长度信息...");byte[] file_size = Utils.int2Bytes(newDex.length);System.arraycopy(file_size, 0, newDex, 32, 4);}
//  public static void main(String[] args) throws Exception {
//      ByteBuf byteBuf = ByteBufAllocator.DEFAULT.buffer();
//      byteBuf.writeInt(241241143);
//      byte[] a = new byte[4];
//      byteBuf.markReaderIndex();
//      byteBuf.readBytes(a);
//      byteBuf.resetReaderIndex();
//
//      System.out.println(Arrays.toString(a));
//      System.out.println(Arrays.toString(int2Bytes(241241143)));
//      System.out.println(Arrays.toString(intToBytes(241241143)));
//  }}

Zip.java

import java.io.BufferedInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.InputStream;
import java.util.Enumeration;
import java.util.zip.CRC32;
import java.util.zip.CheckedOutputStream;
import java.util.zip.ZipEntry;
import java.util.zip.ZipFile;
import java.util.zip.ZipOutputStream;/*** Created by xiang on 2017/5/17.*/public class Zip {public static void unZip(File zip, File dir) {try {dir.delete();ZipFile zipFile = new ZipFile(zip);Enumeration<? extends ZipEntry> entries = zipFile.entries();while (entries.hasMoreElements()) {ZipEntry zipEntry = entries.nextElement();String name = zipEntry.getName();if (name.equals("META-INF/CERT.RSA") || name.equals("META-INF/CERT.SF") || name.equals("META-INF/MANIFEST.MF")) {continue;}if (!zipEntry.isDirectory()) {File file = new File(dir, name);if (!file.getParentFile().exists()) file.getParentFile().mkdirs();FileOutputStream fos = new FileOutputStream(file);InputStream is = zipFile.getInputStream(zipEntry);byte[] buffer = new byte[1024];int len;while ((len = is.read(buffer)) != -1) {fos.write(buffer, 0, len);}is.close();fos.close();}}zipFile.close();} catch (Exception e) {e.printStackTrace();}}public static void zip(File dir, File zip) throws Exception {zip.delete();// 对输出文件做CRC32校验CheckedOutputStream cos = new CheckedOutputStream(new FileOutputStream(zip), new CRC32());ZipOutputStream zos = new ZipOutputStream(cos);compress(dir, zos, "");zos.flush();zos.close();}private static void compress(File srcFile, ZipOutputStream zos,String basePath) throws Exception {if (srcFile.isDirectory()) {compressDir(srcFile, zos, basePath);} else {compressFile(srcFile, zos, basePath);}}private static void compressDir(File dir, ZipOutputStream zos,String basePath) throws Exception {File[] files = dir.listFiles();// 构建空目录if (files.length < 1) {ZipEntry entry = new ZipEntry(basePath + dir.getName() + "/");zos.putNextEntry(entry);zos.closeEntry();}for (File file : files) {// 递归压缩compress(file, zos, basePath + dir.getName() + "/");}}private static void compressFile(File file, ZipOutputStream zos, String dir)throws Exception {String dirName = dir + file.getName();String[] dirNameNew = dirName.split("/");StringBuffer buffer = new StringBuffer();if (dirNameNew.length > 1) {for (int i = 1; i < dirNameNew.length; i++) {buffer.append("/");buffer.append(dirNameNew[i]);}} else {buffer.append("/");}ZipEntry entry = new ZipEntry(buffer.toString().substring(1));zos.putNextEntry(entry);BufferedInputStream bis = new BufferedInputStream(new FileInputStream(file));int count;byte data[] = new byte[1024];while ((count = bis.read(data, 0, 1024)) != -1) {zos.write(data, 0, count);}bis.close();zos.closeEntry();}
}

==Android

app

AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"package="com.example.protectapp"><applicationandroid:allowBackup="true"android:icon="@mipmap/ic_launcher"android:label="@string/app_name"android:roundIcon="@mipmap/ic_launcher_round"android:supportsRtl="true"android:name="com.example.mylibrary.ShellApplication"android:theme="@style/AppTheme"><activity android:name=".MainActivity"><intent-filter><action android:name="android.intent.action.MAIN" /><category android:name="android.intent.category.LAUNCHER" /></intent-filter></activity></application></manifest>

MainActivity.java

package com.example.protectapp;import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;public class MainActivity extends AppCompatActivity {@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);}
}

lib

ShellApplication.java

package com.example.mylibrary;import android.app.Application;
import android.content.Context;
import android.os.Build;
import android.util.Log;import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.RandomAccessFile;
import java.lang.reflect.Array;
import java.lang.reflect.Field;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Iterator;
import java.util.List;/*** @author 享学课堂 Alvin* @package com.xiangxue.alvin.applibrary* @fileName ShellApplication* @date on 2019/4/21* @qq 2464061231**/
public class ShellApplication extends Application {private static final String TAG = "ShellApplication";public static String getPassword(){return "abcdefghijklmnop";}//    static {
//        System.loadLibrary("native-lib");
//    }@Overrideprotected void attachBaseContext(Context base) {super.attachBaseContext(base);AES.init(getPassword());File apkFile = new File(getApplicationInfo().sourceDir);//data/data/包名/files/fake_apk/File unZipFile = getDir("fake_apk", MODE_PRIVATE);File app = new File(unZipFile, "app");if (!app.exists()) {Zip.unZip(apkFile, app);File[] files = app.listFiles();for (File file : files) {String name = file.getName();if (name.equals("classes.dex")) {} else if (name.endsWith(".dex")) {try {byte[] bytes = getBytes(file);FileOutputStream fos = new FileOutputStream(file);byte[] decrypt = AES.decrypt(bytes);
//                        fos.write(bytes);fos.write(decrypt);fos.flush();fos.close();} catch (Exception e) {e.printStackTrace();}}}}List list = new ArrayList<>();Log.d("FAKE", Arrays.toString(app.listFiles()));for (File file : app.listFiles()) {if (file.getName().endsWith(".dex")) {list.add(file);}}Log.d("FAKE", list.toString());try {V19.install(getClassLoader(), list, unZipFile);} catch (IllegalAccessException e) {e.printStackTrace();} catch (NoSuchFieldException e) {e.printStackTrace();} catch (InvocationTargetException e) {e.printStackTrace();} catch (NoSuchMethodException e) {e.printStackTrace();}}private static Field findField(Object instance, String name) throws NoSuchFieldException {Class clazz = instance.getClass();while (clazz != null) {try {Field e = clazz.getDeclaredField(name);if (!e.isAccessible()) {e.setAccessible(true);}return e;} catch (NoSuchFieldException var4) {clazz = clazz.getSuperclass();}}throw new NoSuchFieldException("Field " + name + " not found in " + instance.getClass());}private static Method findMethod(Object instance, String name, Class... parameterTypes)throws NoSuchMethodException {Class clazz = instance.getClass();
//        Method[] declaredMethods = clazz.getDeclaredMethods();
//        System.out.println("  findMethod ");
//        for (Method m : declaredMethods) {
//            System.out.print(m.getName() + "  : ");
//            Class<?>[] parameterTypes1 = m.getParameterTypes();
//            for (Class clazz1 : parameterTypes1) {
//                System.out.print(clazz1.getName() + " ");
//            }
//            System.out.println("");
//        }while (clazz != null) {try {Method e = clazz.getDeclaredMethod(name, parameterTypes);if (!e.isAccessible()) {e.setAccessible(true);}return e;} catch (NoSuchMethodException var5) {clazz = clazz.getSuperclass();}}throw new NoSuchMethodException("Method " + name + " with parameters " + Arrays.asList(parameterTypes) + " not found in " + instance.getClass());}private static void expandFieldArray(Object instance, String fieldName, Object[]extraElements) throws NoSuchFieldException, IllegalArgumentException,IllegalAccessException {Field jlrField = findField(instance, fieldName);Object[] original = (Object[]) ((Object[]) jlrField.get(instance));Object[] combined = (Object[]) ((Object[]) Array.newInstance(original.getClass().getComponentType(), original.length + extraElements.length));System.arraycopy(original, 0, combined, 0, original.length);System.arraycopy(extraElements, 0, combined, original.length, extraElements.length);jlrField.set(instance, combined);}private static final class V19 {private V19() {}private static void install(ClassLoader loader, List<File> additionalClassPathEntries,File optimizedDirectory) throws IllegalArgumentException,IllegalAccessException, NoSuchFieldException, InvocationTargetException,NoSuchMethodException {Field pathListField = findField(loader, "pathList");Object dexPathList = pathListField.get(loader);ArrayList suppressedExceptions = new ArrayList();Log.d(TAG, "Build.VERSION.SDK_INT " + Build.VERSION.SDK_INT);if (Build.VERSION.SDK_INT >= 23) {expandFieldArray(dexPathList, "dexElements", makePathElements(dexPathList, newArrayList(additionalClassPathEntries), optimizedDirectory,suppressedExceptions));} else {expandFieldArray(dexPathList, "dexElements", makeDexElements(dexPathList, newArrayList(additionalClassPathEntries), optimizedDirectory,suppressedExceptions));}if (suppressedExceptions.size() > 0) {Iterator suppressedExceptionsField = suppressedExceptions.iterator();while (suppressedExceptionsField.hasNext()) {IOException dexElementsSuppressedExceptions = (IOException)suppressedExceptionsField.next();Log.w("MultiDex", "Exception in makeDexElement",dexElementsSuppressedExceptions);}Field suppressedExceptionsField1 = findField(loader,"dexElementsSuppressedExceptions");IOException[] dexElementsSuppressedExceptions1 = (IOException[]) ((IOException[])suppressedExceptionsField1.get(loader));if (dexElementsSuppressedExceptions1 == null) {dexElementsSuppressedExceptions1 = (IOException[]) suppressedExceptions.toArray(new IOException[suppressedExceptions.size()]);} else {IOException[] combined = new IOException[suppressedExceptions.size() +dexElementsSuppressedExceptions1.length];suppressedExceptions.toArray(combined);System.arraycopy(dexElementsSuppressedExceptions1, 0, combined,suppressedExceptions.size(), dexElementsSuppressedExceptions1.length);dexElementsSuppressedExceptions1 = combined;}suppressedExceptionsField1.set(loader, dexElementsSuppressedExceptions1);}}private static Object[] makeDexElements(Object dexPathList,ArrayList<File> files, FileoptimizedDirectory,ArrayList<IOException> suppressedExceptions) throwsIllegalAccessException, InvocationTargetException, NoSuchMethodException {Method makeDexElements = findMethod(dexPathList, "makeDexElements", newClass[]{ArrayList.class, File.class, ArrayList.class});return ((Object[]) makeDexElements.invoke(dexPathList, new Object[]{files,optimizedDirectory, suppressedExceptions}));}}/*** A wrapper around* {@code private static final dalvik.system.DexPathList#makePathElements}.*/private static Object[] makePathElements(Object dexPathList, ArrayList<File> files, File optimizedDirectory,ArrayList<IOException> suppressedExceptions)throws IllegalAccessException, InvocationTargetException, NoSuchMethodException {Method makePathElements;try {makePathElements = findMethod(dexPathList, "makePathElements", List.class, File.class,List.class);} catch (NoSuchMethodException e) {Log.e(TAG, "NoSuchMethodException: makePathElements(List,File,List) failure");try {makePathElements = findMethod(dexPathList, "makePathElements", ArrayList.class, File.class, ArrayList.class);} catch (NoSuchMethodException e1) {Log.e(TAG, "NoSuchMethodException: makeDexElements(ArrayList,File,ArrayList) failure");try {Log.e(TAG, "NoSuchMethodException: try use v19 instead");return V19.makeDexElements(dexPathList, files, optimizedDirectory, suppressedExceptions);} catch (NoSuchMethodException e2) {Log.e(TAG, "NoSuchMethodException: makeDexElements(List,File,List) failure");throw e2;}}}return (Object[]) makePathElements.invoke(dexPathList, files, optimizedDirectory, suppressedExceptions);}private byte[] getBytes(File file) throws Exception {RandomAccessFile r = new RandomAccessFile(file, "r");byte[] buffer = new byte[(int) r.length()];r.readFully(buffer);r.close();return buffer;}
}

AES.java

package com.example.mylibrary;import java.io.File;
import java.security.InvalidKeyException;
import java.security.NoSuchAlgorithmException;import javax.crypto.BadPaddingException;
import javax.crypto.Cipher;
import javax.crypto.IllegalBlockSizeException;
import javax.crypto.NoSuchPaddingException;
import javax.crypto.spec.SecretKeySpec;/*** Created by xiang on 16/6/8.*/
public class AES {public static final String DEFAULT_PWD = "abcdefghijklmnop";private static final String algorithmStr = "AES/ECB/PKCS5Padding";private static Cipher encryptCipher;private static Cipher decryptCipher;public static void init(String password) {try {// 生成一个实现指定转换的 Cipher 对象。encryptCipher = Cipher.getInstance(algorithmStr);decryptCipher = Cipher.getInstance(algorithmStr);// algorithmStrbyte[] keyStr = password.getBytes();SecretKeySpec key = new SecretKeySpec(keyStr, "AES");encryptCipher.init(Cipher.ENCRYPT_MODE, key);decryptCipher.init(Cipher.DECRYPT_MODE, key);} catch (NoSuchAlgorithmException e) {e.printStackTrace();} catch (NoSuchPaddingException e) {e.printStackTrace();} catch (InvalidKeyException e) {e.printStackTrace();}}public static byte[] encrypt(byte[] content) {try {byte[] result = encryptCipher.doFinal(content);return result;} catch (IllegalBlockSizeException e) {e.printStackTrace();} catch (BadPaddingException e) {e.printStackTrace();}return null;}public static byte[] decrypt(byte[] content) {try {byte[] result = decryptCipher.doFinal(content);return result;} catch (IllegalBlockSizeException e) {e.printStackTrace();} catch (BadPaddingException e) {e.printStackTrace();}return null;}public static void main(String[] args) throws Exception {File zip = new File("/Users/xiang/develop/app-debug.apk");String absolutePath = zip.getAbsolutePath();File dir = new File(absolutePath.substring(0, absolutePath.lastIndexOf(".")));Zip.unZip(zip,dir);File zip2 = new File("/Users/xiang/develop/app-debug2.apk");Zip.zip(dir,zip2);String[] argv = {"jarsigner","-verbose", "-sigalg", "MD5withRSA","-digestalg", "SHA1","-keystore", "/Users/xiang/develop/debug.keystore","-storepass","android","-keypass", "android","-signedjar", "/Users/xiang/develop/app-debug2-sign.apk","/Users/xiang/develop/app-debug2.apk","androiddebugkey"};Process pro = null;try {pro = Runtime.getRuntime().exec(argv);//destroy the streamtry {pro.waitFor();} catch (InterruptedException e) {e.printStackTrace();}} finally {if (pro != null) {pro.destroy();}}}}

Base64.java

package com.example.mylibrary;import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.OutputStream;/*** Created by xiang on 16/5/11.*/
public final class Base64 {private static final char[] legalChars = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/".toCharArray();public static String encode(byte[] data) {int start = 0;int len = data.length;StringBuffer buf = new StringBuffer(data.length * 3 / 2);int end = len - 3;int i = start;int n = 0;while (i <= end) {int d = ((((int) data[i]) & 0x0ff) << 16) | ((((int) data[i + 1]) & 0x0ff) << 8)| (((int) data[i + 2]) & 0x0ff);buf.append(legalChars[(d >> 18) & 63]);buf.append(legalChars[(d >> 12) & 63]);buf.append(legalChars[(d >> 6) & 63]);buf.append(legalChars[d & 63]);i += 3;if (n++ >= 14) {n = 0;buf.append(" ");}}if (i == start + len - 2) {int d = ((((int) data[i]) & 0x0ff) << 16) | ((((int) data[i + 1]) & 255) << 8);buf.append(legalChars[(d >> 18) & 63]);buf.append(legalChars[(d >> 12) & 63]);buf.append(legalChars[(d >> 6) & 63]);buf.append("=");} else if (i == start + len - 1) {int d = (((int) data[i]) & 0x0ff) << 16;buf.append(legalChars[(d >> 18) & 63]);buf.append(legalChars[(d >> 12) & 63]);buf.append("==");}return buf.toString();}private static int decode(char c) {if (c >= 'A' && c <= 'Z')return ((int) c) - 65;else if (c >= 'a' && c <= 'z')return ((int) c) - 97 + 26;else if (c >= '0' && c <= '9')return ((int) c) - 48 + 26 + 26;elseswitch (c) {case '+':return 62;case '/':return 63;case '=':return 0;default:throw new RuntimeException("unexpected code: " + c);}}/*** Decodes the given Base64 encoded String to a new byte array. The byte* array holding the decoded data is returned.*/public static byte[] decode(String s) {ByteArrayOutputStream bos = new ByteArrayOutputStream();try {decode(s, bos);} catch (IOException e) {throw new RuntimeException();}byte[] decodedBytes = bos.toByteArray();try {bos.close();bos = null;} catch (IOException ex) {System.err.println("Error while decoding BASE64: " + ex.toString());}return decodedBytes;}private static void decode(String s, OutputStream os) throws IOException {int i = 0;int len = s.length();while (true) {while (i < len && s.charAt(i) <= ' ')i++;if (i == len)break;int tri = (decode(s.charAt(i)) << 18) + (decode(s.charAt(i + 1)) << 12) + (decode(s.charAt(i + 2)) << 6)+ (decode(s.charAt(i + 3)));os.write((tri >> 16) & 255);if (s.charAt(i + 2) == '=')break;os.write((tri >> 8) & 255);if (s.charAt(i + 3) == '=')break;os.write(tri & 255);i += 4;}}
}

Utils.java

package com.example.mylibrary;/*** Created by xiang on 2017/5/17.*/public class Utils {//    public static byte[] int2Bytes(int number) {
//        byte[] b = new byte[4];
//        for (int i = 3; i >= 0; i--) {
//            b[i] = (byte) (number % 256);
//            number >>= 8;
//        }
//        return b;
//    }public static byte[] int2Bytes(int value) {byte[] src = new byte[4];src[3] = (byte) ((value >> 24) & 0xFF);src[2] = (byte) ((value >> 16) & 0xFF);src[1] = (byte) ((value >> 8) & 0xFF);src[0] = (byte) (value & 0xFF);return src;}public static int bytes2Int(byte[] src) {int value;value = (int) ((src[0] & 0xFF)| ((src[1] & 0xFF)<<8)| ((src[2] & 0xFF)<<16)| ((src[3] & 0xFF)<<24));return value;}public static void main(String[] args) throws Exception {
//        ByteBuf byteBuf = ByteBufAllocator.DEFAULT.buffer();
//        byteBuf.writeInt(241241143);
//        byte[] a = new byte[4];
//        byteBuf.markReaderIndex();
//        byteBuf.readBytes(a);
//        byteBuf.resetReaderIndex();
//
//        System.out.println(Arrays.toString(a));
//        System.out.println(Arrays.toString(int2Bytes(241241143)));
//        System.out.println(Arrays.toString(intToBytes(241241143)));}}

Zip.java

package com.example.mylibrary;import java.io.BufferedInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.InputStream;
import java.util.Enumeration;
import java.util.zip.CRC32;
import java.util.zip.CheckedOutputStream;
import java.util.zip.ZipEntry;
import java.util.zip.ZipFile;
import java.util.zip.ZipOutputStream;/*** Created by xiang on 2017/5/17.*/public class Zip {public static void unZip(File zip, File dir) {try {dir.delete();ZipFile zipFile = new ZipFile(zip);Enumeration<? extends ZipEntry> entries = zipFile.entries();while (entries.hasMoreElements()) {ZipEntry zipEntry = entries.nextElement();String name = zipEntry.getName();if (name.equals("META-INF/CERT.RSA") || name.equals("META-INF/CERT.SF") || name.equals("META-INF/MANIFEST.MF")) {continue;}if (!zipEntry.isDirectory()) {File file = new File(dir, name);if (!file.getParentFile().exists()) file.getParentFile().mkdirs();FileOutputStream fos = new FileOutputStream(file);InputStream is = zipFile.getInputStream(zipEntry);byte[] buffer = new byte[1024];int len;while ((len = is.read(buffer)) != -1) {fos.write(buffer, 0, len);}is.close();fos.close();}}zipFile.close();} catch (Exception e) {e.printStackTrace();}}public static void zip(File dir, File zip) throws Exception {zip.delete();// 对输出文件做CRC32校验CheckedOutputStream cos = new CheckedOutputStream(new FileOutputStream(zip), new CRC32());ZipOutputStream zos = new ZipOutputStream(cos);compress(dir, zos, "");zos.flush();zos.close();}private static void compress(File srcFile, ZipOutputStream zos,String basePath) throws Exception {if (srcFile.isDirectory()) {compressDir(srcFile, zos, basePath);} else {compressFile(srcFile, zos, basePath);}}private static void compressDir(File dir, ZipOutputStream zos,String basePath) throws Exception {File[] files = dir.listFiles();// 构建空目录if (files.length < 1) {ZipEntry entry = new ZipEntry(basePath + dir.getName() + "/");zos.putNextEntry(entry);zos.closeEntry();}for (File file : files) {// 递归压缩compress(file, zos, basePath + dir.getName() + "/");}}private static void compressFile(File file, ZipOutputStream zos, String dir)throws Exception {String dirName = dir + file.getName();String[] dirNameNew = dirName.split("/");StringBuffer buffer = new StringBuffer();if (dirNameNew.length > 1) {for (int i = 1; i < dirNameNew.length; i++) {buffer.append("/");buffer.append(dirNameNew[i]);}} else {buffer.append("/");}ZipEntry entry = new ZipEntry(buffer.toString().substring(1));zos.putNextEntry(entry);BufferedInputStream bis = new BufferedInputStream(new FileInputStream(file));int count;byte data[] = new byte[1024];while ((count = bis.read(data, 0, 1024)) != -1) {zos.write(data, 0, count);}bis.close();zos.closeEntry();}}